Blood testing apparatus



FIG. 1 is a right side, front perspective view of a blood testing apparatus showing our new design;

FIG. 2 is a left side, rear perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a left side view thereof, the right side view being the same.

The broken lines in the drawing views illustrate portions of the blood testing apparatus that form no part of the claimed design. 

CLAIM The ornamental design for a blood testing apparatus, as shown and described. 